Researchers investigated the effect of gender (male or female) and weight (light or heavy) on the length of time required by firefighters to perform a particular firefighting task (Human Factors). Eight firefighters were selected in each of the four gender–weight categories. Each firefighter was required to perform a certain task. The time (in minutes) needed to perform the task was recorded for each.

a. List the factors involved in the experiment.

b. For each factor, state whether it is quantitative or qualitative.

c. How many treatments are involved in this experiment? List them.